July in Haverhill averages a daily high of 28.4°C with nights around 16.4°C. Expect roughly 10.7 wet days totalling 99mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Haverhill is May–June.
Based on HAVERHILL, MA US (2.3km), 1995–2024. 29 years of July data.